Results 71 to 80 of about 3,808 (207)
Classification of stony meteorites and chondrules – the case of meteorite Jesenice
In the first part of the paper there is a description about genesis of meteorites, in particularly about stony meteorites– chondrites, since meteorite Jesenice is an ordinary L chondrite. Chondrules represent main part of the mass ofchondritic meteorites.
Bojan Ambrožič +3 more
doaj
Raman Study of the Slobodka Ordinary Chondrite
The texture and mineral chemistry of Slobodka are most consistent with L4 chondrites, exhibiting strong shock metamorphism characteristic of shock stage S4, including irregular and planar fractures, undulatory extinction, and mosaicism in olivine, pyroxene, and plagioclase.
M. Simopoulou +10 more
wiley +1 more source
Planetesimal Impact Vapor Plumes and Nebular Shocks Form Chondritic Mixtures
The origin of chondrules and the chondritic sedimentary rocks that dominate the meteoritic record is a long-standing problem in planetary science. Here, we develop a physical model for the formation of chondritic mixtures as an outcome of vaporizing ...
Sarah T. Stewart +5 more
doaj +1 more source
The Short Circuit Instability in Protoplanetary Disks: Processing high temperature minerals
We introduce a magneto-hydrodynamic instability which occurs, among other locations, in the inner, hot regions of protoplanetary disks, and which alters the way in which resistive dissipation of magnetic energy into heat proceeds.
D’Alessio P. +4 more
doaj +1 more source
Petrography of phosphates in CI and CY carbonaceous chondrites
Abstract Phosphate minerals are significant carriers of volatiles (e.g., OH) and halogens in chondritic material; however, their origin in most groups of carbonaceous chondrites remains poorly characterized. We have determined the abundance, morphology, texture, and composition of phosphate grains in aqueously altered CI chondrites and in hydrated and ...
C. S. Harrison +3 more
wiley +1 more source
Silicon isotopic compositions of chondrule silicates in carbonaceous chondrites and the formation of primordial solids in the accretion disk [PDF]
Johan Villeneuve +2 more
openalex +1 more source
3D SR‐μXCT analysis for lithology detection: Application to Ryugu sample A0159
Abstract Extraterrestrial breccia samples are formed through impact‐related processes that combine the fragments of distinct lithologies. As such, they are valuable indicators of the complex formation and evolution history of planetesimals in our solar system.
Léna Jossé +9 more
wiley +1 more source
There is a good consensus about the age of the most primitive materials in the Solar System represented by carbonaceous chondrites. From these, a canonical age of the Solar System of 4567 Ma has been defined.
María del Sol Hernández-Bernal +1 more
doaj
The fall of the Haag (LL4‐6) chondrite breccia—Just 8 years after the nearby fall Stubenberg (LL6)
Abstract On October 24, 2024, an impressive fireball was visible over Austria. After the possible strewn field was calculated, the first sample of the Haag meteorite, with a mass of 8.76 g, was discovered on November 2, 2024, 8 days after the fireball event. Four more samples were found afterward putting the total sample mass at about 151 g.
Addi Bischoff +25 more
wiley +1 more source
A comprehensive classification of primitive achondrites is difficult due to the high compositional and textural variability and the low number of samples available.
Vanni Moggi Cecchi, Stefano Caporali
doaj +1 more source

